[STURDY AND ]- Made of high-quality ABS plastic and brown corundum grinding wheel, High hardness, rustproof, solid and ,self-centering point, do not need assistant center drilling or center punching. [ INCREASE THE LIFE OF DRILL BITS]- Forget the of trying to find the correct angle by hand or accidentally tapering the edge of your tools. Improve the utilization of drill bits, solve the troubles you have been buying drill bits, save time and save money. [Warm-Tips]- The grinding wheel currently equipped with this product is brown corundum grinding wheel, so the product is mainly used for grinding iron-type drill bits. Other high-hardness drill bits are not suitable for use, and the loss be relatively . [Reliable and Efficient]- Compact and portable drill grinding tool, Use this drill bit sharpener with your power drill to keep bits and ready for use., Manufacturer: Hundnsney